55677949 has 2 divisors, whose sum is σ = 55677950. Its totient is φ = 55677948.

The previous prime is 55677899. The next prime is 55677997. The reversal of 55677949 is 94977655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43322724 + 12355225 = 6582^2 + 3515^2 .

It is a cyclic number.

It is not a de Polignac number, because 55677949 - 2⁷ = 55677821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55677896 and 55677905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55671949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27838974 + 27838975.

It is an arithmetic number, because the mean of its divisors is an integer number (27838975).

Almost surely, 2^55677949 is an apocalyptic number.

It is an amenable number.

55677949 is a deficient number, since it is larger than the sum of its proper divisors (1).

55677949 is an equidigital number, since it uses as much as digits as its factorization.

55677949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2381400, while the sum is 52.

The square root of 55677949 is about 7461.7658097799. The cubic root of 55677949 is about 381.8514196981.

The spelling of 55677949 in words is "fifty-five million, six hundred seventy-seven thousand, nine hundred forty-nine".